Telomere length and possible link to X chromosome.
D000328:Adult; D000375:Aging / Q000235:genetics* / Q000502:physiology; D001482:Base Composition; D001530:Belgium; D041321:Chromosomes, Human, X / Q000235:genetics* / Q000648:ultrastructure; D015331:Cohort Studies; D005190:Family; D005260:Female; D006801:Humans; D007962:Leukocytes / Q000502:physiology / Q000648:ultrastructure; D008297:Male; D008393:Marriage; D008875:Middle Aged; D010375:Pedigree; D015183:Restriction Mapping / Q000379:methods; D012494:Sampling Studies; D020080:Tandem Repeat Sequences / Q000235:genetics / Q000502:physiology; D016615:Telomere / Q000235:genetics* / Q000648:ultrastructure